Discussion
What is the approximate size of the bacterial cell?
Answer: D
Correct answer: 0.5 to 1.0 micrometer in diameter
A typical bacterium is about 0.5-1.0 μm across and a few micrometres long - small enough to need a light microscope at its limit, or an electron microscope for detail. The small size gives a very high surface-to-volume ratio, which is what allows such rapid exchange with the environment and such fast growth.
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